inkscape-manual

.png
Raster image format recommended by W3C with alpha support.
.bmp
.wbmp
.ico, .cur
.jpg, .jpeg
Raster image basic format. Produces very heavy pictures.
Wireless Bitmap format aimed for 2-bits (BW) encoding especially for early
mobile applications.
Microsoft Windows format for cursor and icons.
Raster image format commonly used for photos on the internet. many camera
do save pictures in JPEG format too.
.pnm, .pgm, .pbm, .ppm
.ras
.tiff
Portable Anymap, Portable greymap, Portable bitmap, Portable Pixmap :
Raster image format
Raster image format used by Sun Microsystems computers, typically created
on a Unix workstation; supports 1, 8, 24, and 32 bits per pixel; can be
uncompressed or compressed using RLE compression; recognized by most
image viewing programs.
Raster image format especially made for professional printing process.
.xpm, .xbm
.tga, .targa
.pcx
Raster image format used on X11 server for icons.
High level Raster image format frequently used in 3D-design for textures or
alpha support.
Old raster image format used mainly in the '80 and '90s. JPEG and PNG are
now recommended instead.
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